建立了在线液相色谱-二极管阵列检测器-串联质谱技术(LC-DAD-MS/MS)同时测定野生菌中多肽类蘑菇毒素(鹅膏毒肽和鬼笔毒肽)的分析方法。样品经甲醇提取,水稀释后,在碱性条件下用XBridge^(TM) BEH C_(18)柱(150m m×3.0 m m,2.5μm)分...建立了在线液相色谱-二极管阵列检测器-串联质谱技术(LC-DAD-MS/MS)同时测定野生菌中多肽类蘑菇毒素(鹅膏毒肽和鬼笔毒肽)的分析方法。样品经甲醇提取,水稀释后,在碱性条件下用XBridge^(TM) BEH C_(18)柱(150m m×3.0 m m,2.5μm)分离,并先后用DAD和MS/MS检测。使用碱性流动相能够实现5种多肽类蘑菇毒素在15 m in内达到基线分离,同时又能有效抑制质谱加钠峰[M+Na]^+的响应信号,保证检测的稳定性和灵敏度。5种蘑菇毒素在0.05~500 mg/kg范围内线性关系良好,相关系数(r)>0.99;检出限为0.005~0.02 mg/kg。通过实际样品检测,证明该法操作简单、快速,灵敏度高,宽的定量检测线性范围能满足实际样品中蘑菇毒素含量变化大的特点。展开更多
在制备6-磷酸甘露糖过程中,将6-磷酸甘露糖与磷酸根杂质分开是纯化过程和建立质量标准的重要环节。本文建立了6-磷酸甘露糖和磷酸根的离子色谱分离-电化学检测方法。样品经溶解、过滤后进行色谱分析,以Ion-Pac AG18离子交换柱(50 m m...在制备6-磷酸甘露糖过程中,将6-磷酸甘露糖与磷酸根杂质分开是纯化过程和建立质量标准的重要环节。本文建立了6-磷酸甘露糖和磷酸根的离子色谱分离-电化学检测方法。样品经溶解、过滤后进行色谱分析,以Ion-Pac AG18离子交换柱(50 m m×4 m m)为保护柱,在Io npac AS18离子交换色谱柱(250 m m×4 m m)上分离,以25 m m o l/L氢氧化钾溶液为流动相,等度淋洗,流速1.0 m L/m in,安培检测器和电导检测器串联检测,外标法定量。先使用安培检测器检测,在碱性条件下,6-磷酸甘露糖在安培检测器上被选择性检出;后使用电导检测器检测,经ASRS型抑制器抑制背景电导后,6-磷酸甘露糖和磷酸根同时被电导检测器检出,二者分离度良好。采用安培检测器检测时,进样量为25μL,6-磷酸甘露糖的线性范围为0.06～10.00 mg/L,相关系数为0.999 8,回收率为92.1%～103.1%,相对标准偏差均小于3%,检出限(以信噪比为3计)为0.02 m g/L。该方法灵敏度高,无杂质干扰,前处理简便,可用于原料药合成中间体的检测,结果令人满意。展开更多
A novel and sensitive HPLC-UV method has been developed for the simultaneous determination of twelve major compounds in Longdan Xiegan Pill.The chemical profile of the twelve compounds,including geniposidic acid（1）,...A novel and sensitive HPLC-UV method has been developed for the simultaneous determination of twelve major compounds in Longdan Xiegan Pill.The chemical profile of the twelve compounds,including geniposidic acid（1）,geniposide（2）,gentiopicroside（3）,liquiritin（4）,crocin（5）,baicalin（6）,wogonoside（7）,baicalein（8）,glycyrrhizic acid（9）,wogonin（10）,oroxylin A（11）and aristolochic acid A（12）,was acquired using high-performance liquid chromatography-diode array detector coupled with an electrospray tandem mass spectrometer（HPLC-DAD-ESI-MS）.The analysis was performed on a Dikma Platisil ODS C18 column（250 mm×4.6 mm,5 μm）with a gradient solvent system of acetonitrile-0.1% aqueous formic acid.The validation was carried out and the linearities（r〉0.9996）,repeatability（RSD〈1.8%）,intra-and inter-day precision（RSD〈1.3%）,and recoveries（ranging from 96.6% to 103.4%）were acceptable.The limits of detection（LOD）of these compounds ranged from 0.29 to 4.17 ng.Aristolochic acid A,which is the toxic ingredient,was not detected in all the batches of Longdan Xiegan Pill.Furthermore,hierarchical cluster analysis was used to evaluate the variation of the herbal prescription.The proposed method is simple,effective and suitable for the quality control of this traditional Chinese medicine（TCM）.展开更多
文摘建立了在线液相色谱-二极管阵列检测器-串联质谱技术(LC-DAD-MS/MS)同时测定野生菌中多肽类蘑菇毒素(鹅膏毒肽和鬼笔毒肽)的分析方法。样品经甲醇提取,水稀释后,在碱性条件下用XBridge^(TM) BEH C_(18)柱(150m m×3.0 m m,2.5μm)分离,并先后用DAD和MS/MS检测。使用碱性流动相能够实现5种多肽类蘑菇毒素在15 m in内达到基线分离,同时又能有效抑制质谱加钠峰[M+Na]^+的响应信号,保证检测的稳定性和灵敏度。5种蘑菇毒素在0.05~500 mg/kg范围内线性关系良好,相关系数(r)>0.99;检出限为0.005~0.02 mg/kg。通过实际样品检测,证明该法操作简单、快速,灵敏度高,宽的定量检测线性范围能满足实际样品中蘑菇毒素含量变化大的特点。
文摘在制备6-磷酸甘露糖过程中,将6-磷酸甘露糖与磷酸根杂质分开是纯化过程和建立质量标准的重要环节。本文建立了6-磷酸甘露糖和磷酸根的离子色谱分离-电化学检测方法。样品经溶解、过滤后进行色谱分析,以Ion-Pac AG18离子交换柱(50 m m×4 m m)为保护柱,在Io npac AS18离子交换色谱柱(250 m m×4 m m)上分离,以25 m m o l/L氢氧化钾溶液为流动相,等度淋洗,流速1.0 m L/m in,安培检测器和电导检测器串联检测,外标法定量。先使用安培检测器检测,在碱性条件下,6-磷酸甘露糖在安培检测器上被选择性检出;后使用电导检测器检测,经ASRS型抑制器抑制背景电导后,6-磷酸甘露糖和磷酸根同时被电导检测器检出,二者分离度良好。采用安培检测器检测时,进样量为25μL,6-磷酸甘露糖的线性范围为0.06～10.00 mg/L,相关系数为0.999 8,回收率为92.1%～103.1%,相对标准偏差均小于3%,检出限(以信噪比为3计)为0.02 m g/L。该方法灵敏度高,无杂质干扰,前处理简便,可用于原料药合成中间体的检测,结果令人满意。
基金supported by program NCET Foundation,NSFC(30725045)the Special Program for New Drug Innovation of the Ministry of Science and Technology,China(2009ZX09311-001,2008ZX09101-Z-029)+1 种基金Shanghai Leading Academic Discipline Project(B906)by the Scientific Foundation of Shanghai,China(07DZ19728,09DZ1975700,09DZ1971500)
文摘A novel and sensitive HPLC-UV method has been developed for the simultaneous determination of twelve major compounds in Longdan Xiegan Pill.The chemical profile of the twelve compounds,including geniposidic acid（1）,geniposide（2）,gentiopicroside（3）,liquiritin（4）,crocin（5）,baicalin（6）,wogonoside（7）,baicalein（8）,glycyrrhizic acid（9）,wogonin（10）,oroxylin A（11）and aristolochic acid A（12）,was acquired using high-performance liquid chromatography-diode array detector coupled with an electrospray tandem mass spectrometer（HPLC-DAD-ESI-MS）.The analysis was performed on a Dikma Platisil ODS C18 column（250 mm×4.6 mm,5 μm）with a gradient solvent system of acetonitrile-0.1% aqueous formic acid.The validation was carried out and the linearities（r〉0.9996）,repeatability（RSD〈1.8%）,intra-and inter-day precision（RSD〈1.3%）,and recoveries（ranging from 96.6% to 103.4%）were acceptable.The limits of detection（LOD）of these compounds ranged from 0.29 to 4.17 ng.Aristolochic acid A,which is the toxic ingredient,was not detected in all the batches of Longdan Xiegan Pill.Furthermore,hierarchical cluster analysis was used to evaluate the variation of the herbal prescription.The proposed method is simple,effective and suitable for the quality control of this traditional Chinese medicine（TCM）.
